Which statement is incorrect for post mitotic gap phase of interphase?

Options

A. In this phase, cell is metabolically activery and grows continuously.
B. It involves replication of RNA,DNA and proteins.
C. Cell organelles increase in number
D. The cell has an option to stop cell cycle and undergo differentiation.

Answer

To solve the question regarding the incorrect statement for the post mitotic gap phase of interphase (G1 phase), we can follow these steps:

### Step-by-Step Solution

1. **Understand the Cell Cycle**:
- The cell cycle consists of interphase and mitosis. Interphase is the longest phase and is divided into three parts: G1 (post mitotic gap), S (synthesis), and G2 (gap 2).

**Hint**: Remember that interphase is where the cell prepares for division, and mitosis is the actual division process.

2. **Define G1 Phase**:
- The G1 phase is the first phase of interphase that occurs immediately after mitosis. It is characterized by cell growth and preparation for DNA synthesis.

**Hint**: G1 is all about growth and preparation, not DNA replication.

3. **Identify Key Activities in G1 Phase**:
- During G1, the cell is metabolically active, synthesizing mRNA and proteins necessary for DNA synthesis. It also increases the number of organelles.

**Hint**: Focus on what happens in G1: growth, mRNA/protein synthesis, and organelle formation.

4. **Evaluate Each Statement**:
- **Statement 1**: "In this phase, the cell is metabolically active and grows continuously."
- This statement is **true**.
- **Statement 2**: "It involves replication of DNA, RNA, and proteins."
- This statement is **incorrect** because DNA replication occurs in the S phase, not G1. G1 involves synthesis of mRNA and proteins, but not DNA.
- **Statement 3**: "Cell organelles increase in number."
- This statement is **true**; organelles do increase in number during G1.
- **Statement 4**: "Cell has an option to stop the cell cycle and undergo differentiation."
- This statement is **true**; cells can exit the cycle and enter G0 phase.

5. **Conclusion**:
- The incorrect statement regarding the post mitotic gap phase (G1 phase) is **Statement 2**.

### Final Answer:
The incorrect statement for the post mitotic gap phase of interphase is **Statement 2**: "It involves replication of DNA, RNA, and proteins."